S
M
T
W
T
F
S
30
98°
78°
31
89°
68°
1
94°
67°
2
95°
70°
3
95°
68°
4
96°
69°
5
97°
70°
6
84°
65°
7
98°
72°
8
100°
76°
9
107°
81°
10
107°
79°
11
108°
73°
12
103°
71°
13
101°
69°
14
100°
68°
15
99°
67°
16
97°
68°
17
100°
66°
18
101°
68°
19
96°
59°
20
89°
53°
21
88°
56°
22
87°
53°
23
87°
55°
24
88°
52°
25
87°
53°
26
89°
53°
27
87°
54°
28
87°
53°
29
90°
50°
30
82°
48°
1
83°
48°
2
84°
49°
3
88°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mesquite
Mesquite's September 2026 forecast shows daily high temperatures ranging from 82° to 108°, with overnight lows between 48° and 81°. The average high for September is 93° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Mesquite. See also: October | November | December.